The patch titled
Subject: rapidio: add check for rio_add_net() in rio_scan_alloc_net()
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
rapidio-add-check-for-rio_add_net-in-rio_scan_alloc_net.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/rapidio-add-check-for-rio_add_net-in-rio_scan_alloc_net.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Haoxiang Li <haoxiang_li2024@xxxxxxx>
Subject: rapidio: add check for rio_add_net() in rio_scan_alloc_net()
Date: Thu, 27 Feb 2025 12:11:31 +0800
The return value of rio_add_net() should be checked. If it fails,
put_device() should be called to free the memory and give up the reference
initialized in rio_add_net().
Link: https://lkml.kernel.org/r/20250227041131.3680761-1-haoxiang_li2024@xxxxxxx
Fixes: e6b585ca6e81 ("rapidio: move net allocation into core code")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Haoxiang Li <haoxiang_li2024@xxxxxxx>
Cc: Alexandre Bounine <alex.bou9@xxxxxxxxx>
Cc: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rapidio/rio-scan.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/rapidio/rio-scan.c~rapidio-add-check-for-rio_add_net-in-rio_scan_alloc_net
+++ a/drivers/rapidio/rio-scan.c
@@ -871,7 +871,10 @@ static struct rio_net *rio_scan_alloc_ne
dev_set_name(&net->dev, "rnet_%d", net->id);
net->dev.parent = &mport->dev;
net->dev.release = rio_scan_release_dev;
- rio_add_net(net);
+ if (rio_add_net(net)) {
+ put_device(&net->dev);
+ net = NULL;
+ }
}
return net;
_
Patches currently in -mm which might be from haoxiang_li2024@xxxxxxx are
m68k-sun3-add-check-for-__pgd_alloc.patch
rapidio-fix-an-api-misues-when-rio_add_net-fails.patch
rapidio-add-check-for-rio_add_net-in-rio_scan_alloc_net.patch
